Of the 60 students in orchestra,
24 are in chorus and 15 are in
photography. Four of the s...
Mathematics, 30.03.2020 04:57 kvivas54
Of the 60 students in orchestra,
24 are in chorus and 15 are in
photography. Four of the students
are in chorus and photography.
If one student is chosen at random,
What is the probability that this
student is in chorus, given that
they are not in photography?
A) 9/20
playing volleyball
B) 2/5
running a marathon
C) 4/9
eating cupcakes
D) 5/12 wake surfing
E) 1/3 driving bumper cars
o Cha Wason (AI Things Algebra UCL 2018
Answers: 1
Mathematics, 21.06.2019 21:50
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?
Answers: 1
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